Study On Radiometric Calibrations Based On Color-Temperature Automatically Adjustable Integrating Sphere Light Source

In this dissertation, the use of integrating sphere to achieve the goals, such as color temperature, brightness automatically, adjusting for the expansion of diffuse light source, the integrating sphere from Halogen Tungsten lights, xenon lights, large-diameter integrating sphere, light bar, stepping motor, the attenuation film, silicon modules Detector, spectral radiometer, power supply, electronic control box components. Use of the spectrum of radiation standard illumination lights, standard white board, as well as diffuse reflectance Spectroradiometer money passing through the radiation standard method of integral sphere Radiance light source for the absolute calibration, and the use of silicon photodiode detectors and spectral radiometer on the integral sphere system Spectral Radiance and other photo / imaging equipment to detect spectral response.This article in the research and comparison of several conventional radiation calibration method (same color temperature) the advantages and disadvantages on the basis of the points put forward the integrating sphere of light rehabilitation programs, through two different color temperature of light within the spectrum of radiation light source and characteristics of sphere a few points inside the paint of the spectral reflectance characteristics of the analysis and comparison and contrast based on data developed by a radiometric calibration source of lighting and composition of the radiometer calibration device, introduced the device of the new radiometric calibration methods , steps, and the results were discussed. The device can be achieved wide field of view, the end-to-end radiometric calibration with perfect functions, portable, easy to operate, and other advantages. The use of the device on the other points the ball and made optoelectronic device is radiation-calibration, and confirmed to meet the radiometric calibration and measurement accuracy. In the radiation measurement system, radiation calibration of the system is to determine the role of the incident radiation and output signal system between the quantitative relationship between the conversion, the radiometric calibration system is absolutely essential step in measuring radiation; due to the radiometric calibration methods And the results of the radiation measurement accuracy has a direct impact, the radiometric calibration system is to develop a key technology.